It's been a long time coming, but according to CrunchGear, Skype is finally coming to iPhone for the ever low price of free. There have been many rumors abound lately about whether or not the service is coming, but now that it's official, it means you can make free VoIP calls via the WiFi feature of the iPhone.

As mentioned, the application will show up in the App Store on Tuesday for free, and will have a range of feature. Firstly and obviously, you will be able to make free phone calls to other Skype users if you own an iPhone are in range of a Wireless network; not only this, but you will be able to use the chat features in Skype, utilizing Apple's built in touch keyboard. A rather handy feature is that when run, the Skype application will scan your current contact list and it will be able to detect who is running Skype or not, providing you a handy list of people you can already call.

This will be great to international users of the iPhone looking to communicate cheaply with one-another, so it is expected to be extremely popular. The Skype application has already begun to show up in the App Store in certain countries, but for the majority, expect to see it tomorrow.